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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Microscopic - make sure not sterile - very few bulls are actually tested






2. Why does estrus happen before ovulation?






3. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






4. 1-2 days






5. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






6. Milk is 15% ________ and 85% __________.






7. 1. brain function - 2. blood flow - 3. willing female






8. Provide nourishment for the developing sperm






9. (LH) causes female's egg to break (her period)






10. (switzerland) 2nd in size and milk production - most muscle -






11. Start of the reproductive tract for the female. located outside of the body






12. Front feet and head first. (except for hogs and dogs)






13. 26 hours after estrus begins






14. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






15. ~305 days (altough often longer due to breeding difficulties)






16. (male) pushes the testes outward toward the legs for a cool-down off of the body






17. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






18. Male on one pin and female on other side






19. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






20. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






21. (switzerland) 2nd in size and milk production - most muscle -






22. Check feet and legs - look for masculine traits in build such as crest and muscling






23. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






24. 30-38 hours after estrus cycle begins






25. 16-20 hours






26. Prevent the cow from getting an infection from the calve






27. (LH) stimulates the Leydig cells to produce testosterone






28. 336 days






29. Why Dairy calves are fed powdered milk.






30. 1-3 days






31. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






32. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






33. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






34. Days which have decreasing daylight hours


35. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






36. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






37. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






38. To remove/separate testicles from animal's body before animal reaches puberty






39. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






40. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






41. Produce testosterone. located between the seminiferous tubules






42. ~60 days before calving






43. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






44. What helps regulate spermatogenesis?






45. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






46. 19-23 (21) days






47. 114 days






48. 114 days






49. What helps regulate spermatogenesis?






50. Contains and regulates the temp of the testes for sperm production